<template>
  <div class="home-container">
    <el-container class="home-container">
      <!-- 头部区域 -->
      <el-header>
        <div>
          <img src="../assets/toulogo.jpg" alt="" />
          <span>电商后台管理系统</span>
        </div>
        <el-button type="info" @click="logout"> 退出</el-button>
      </el-header>
      <!-- 页面主体区域 -->
      <el-container>
        <!-- 侧边栏 -->
        <el-aside :width="isCollapse ? '64px':'200px'">
          <div class="toggle-button" @click="toggleCollapse">
            |||
          </div>
          <!-- 侧边栏菜单区域 -->
          <el-menu
            background-color="#545c64"
            text-color="#fff"
            active-text-color="#009efe"
            unique-opened
            :collapse="isCollapse"
            :collapse-transition="false"
            :router="true"
            :default-active="activePath"
          >
            <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
              <template slot="title">
                <i :class="iconObj[item.id]"></i>
                <span >{{item.authName}}</span>
              </template>

              <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id"
              @click="saveNavState('/'+subItem.path)">
                  <template slot="title">
                <i class="el-icon-menu"></i>
                <span >{{subItem.authName}}</span>
              </template>
              </el-menu-item>
            </el-submenu>
          </el-menu>
        </el-aside>
        <!-- 右侧内容主体 -->
        <el-main>
          <!-- 路由占位符 -->
          <router-view></router-view>
        </el-main>
      </el-container>
    </el-container>
  </div>
</template>

<script>
export default {
  data: function () {
    return {
      menulist:[],
      iconObj:{
        "125":'el-icon-user-solid',
        "103":'el-icon-s-grid',
        "101":'el-icon-shopping-bag-1',
        "102":'el-icon-s-order',
        "145":'el-icon-s-platform',
      },
      // 是否折叠
      isCollapse:false,
      // 被激活的链接地址
      activePath:''
    };
  },
  created() {
    this.getMenuList();
    this.activePath=window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    // 获取所有的菜单
    async getMenuList() {
      const { data: res } = await this.$http.get('menus');
      if (res.meta.status !== 200){
           this.$message.error(res.meta.msg);
      }else{
        this.menulist= res.data;
      }
    //    console.log("res");
    },
    // 点击按钮，切换菜单的折叠与展开
    toggleCollapse(){
      this.isCollapse= !this.isCollapse
    },
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
    }
  },
};
</script>

<style scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #545c64;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: aliceblue;
  font-size: 20px;
}
.el-header div {
  display: flex;
  align-items: center;
}
.el-header div span {
  margin-left: 15px;
}
.el-aside {
  background-color: #545c64;
}
.el-menu{
  border-right: none;
}
.el-main {
  background-color: aliceblue;
}
.toggle-button{
  background-color: darkgray;
  font-size: 10px;
  line-height: 24px;
  color: aliceblue;
  text-align: center;
  letter-spacing: 0.2cm;
  cursor: pointer;
}

</style>